Gerund or to + infinitive 2

I am delighted ____________ you about the product upgrade.

• to tell

• telling

• to tell and telling could both be correct

We need ____________ the issue before it escalates.

• to address

• addressing

• to address and addressing could both be correct

The costs of market research include _________ interviewers.

• to hire

• hiring

• to hire and hiring could both be correct

Would you mind ____________ the presentation for tomorrow's meeting?

• to prepare

• preparing

• to prepare and preparing could both be correct

It is essential ____________ the project timeline to ensure timely completion.

• to review

• reviewing

• to review and reviewing could both be correct

She decided ____________ the new software system to improve efficiency.

• to implement

• implementing

• to implement and implementing could both be correct

I prefer __________ Instagram over Facebook

• to use

• using

• to use and using could both be correct

He is considering ____________ a new car next month.

• to buy

• buying

• to buy and buying could both be correct

It is important ____________ the safety regulations in the workplace.

• to follow

• following

• to follow and following could both be correct